I'm using Xamarin.Forms 5.0.0.1874 and Prism 8.0.0.1909
I'm trying to use Regions and the region doesn't appear. In the callback for navigating to region I'm getting the following error
Prism.Ioc.ContainerResolutionException
An unexpected error occured while resolving Prism.Regions.IActiveRegionHelper
The application doesn't crash. The region just doesn't appear where is suppose to (if I understood the concept of regions correctly) I made a simple example with the code that I'm using. The example can be found in the following GitHub repository
It's a known issue with Prism Unity container.
As provided by Dan here you can switch to Prism DryLoc while waiting for a fix on the Unity side.